Achillea abrotanifolia L. accepted as Tanacetum abrotanifolium (L.) Druce (original description)
Achillea aegyptiaca L. (original description)
Achillea ageratum L. (original description)
Achillea alpina L. (original description)
Achillea atrata L. (original description)
Achillea bipinnata L. accepted as Tanacetum polycephalum subsp. argyrophyllum (K.Koch) Podlech (original description)
Achillea clavennae L. (original description)
Achillea cretica L. accepted as Aspilia floribunda (Gardner) Baker (original description)
Achillea falcata L. (original description)
Achillea impatiens L. (original description)
Achillea inodora L. accepted as Lonas annua (L.) Vines & Druce (original description)
Achillea macrophylla L. accepted as Aspilia platyphylla (Baker) S.F.Blake (original description)
Achillea millefolium L. (original description)
Achillea nana L. accepted as Aspilia foliacea (Spreng.) Baker (original description)
Achillea nobilis L. (original description)
Achillea ptarmica L. (original description)
Achillea pubescens L. (original description)
Achillea santolina L. accepted as Achillea tenuifolia Lam. (original description)
Ageratum L. (original description)
Ageratum altissimum L. accepted as Ageratina altissima (L.) R.M.King & H.Rob. (original description)
Ageratum ciliare L. accepted as Ageratum conyzoides L. (original description)
Ageratum conyzoides L. (original description)
Ambrosia L. (original description)
Ambrosia artemisiifolia L. (original description)
Ambrosia elatior L. accepted as Ambrosia artemisiifolia L. (original description)
Ambrosia maritima L. accepted as Ambrosia polystachya DC. (original description)
Ambrosia trifida L. (original description)
Anacyclus L. (original description)
Anacyclus creticus L. accepted as Anthemis rigida (Sibth. & Sm.) Boiss. ex Heldr. (original description)
Anacyclus orientalis L. accepted as Anthemis orientalis (L.) Degen (original description)
Anacyclus valentinus L. accepted as Porophyllum leiocarpum (Urb.) Rydb. (original description)
Andryala L. (original description)
Andryala integrifolia L. (original description)
Andryala sinuata L. accepted as Andryala integrifolia L. (original description)
Anthemis Mich. ex L. (original description)
Anthemis altissima L. accepted as Cota altissima (L.) J.Gay (original description)
Anthemis arabica L. accepted as Cladanthus arabicus (L.) Cass. (original description)
Anthemis arvensis L. (original description)
Anthemis chia L. (original description)
Anthemis cota L. accepted as Cota altissima (L.) J.Gay (original description)
Anthemis cotula L. (original description)
Anthemis cretica L. (original description)
Anthemis maritima L. (original description)
Anthemis millefolia L. accepted as Tanacetum millefolium (L.) Tzvelev (original description)
Anthemis mixta L. accepted as Cladanthus mixtus (L.) Chevall. (original description)
Anthemis pyrethrum L. accepted as Anacyclus pyrethrum (L.) Lag. (original description)
Anthemis repanda L. accepted as Lepidophorum repandum (L.) DC. (original description)
Anthemis tinctoria L. accepted as Cota tinctoria (L.) J.Gay (original description)
Anthemis tomentosa L. (original description)
Anthemis valentina L. accepted as Porophyllum leiocarpum (Urb.) Rydb. (original description)
Arctium L. (original description)
Arctium personata L. accepted as Carduus personata (L.) Jacq. (original description)
Arctotis L. (original description)
Arctotis angustifolia L. (original description)
Arctotis aspera L. (original description)
Arctotis calendula L. accepted as Arctotheca calendula (L.) Levyns (original description)
Arctotis tristis L. accepted as Arctotheca calendula (L.) Levyns (original description)
Arnica Rupp. ex L. (original description)
Arnica coronopifolia L. accepted as Gazania pectinata (Thunb.) Hartweg (original description)
Arnica crocea L. accepted as Gerbera crocea (L.) Kuntze (original description)
Arnica gerbera L. accepted as Gerbera linnaei Cass. (original description)
Arnica maritima L. accepted as Senecio pseudoarnica Less. (original description)
Arnica montana L. (original description)
Arnica montana var. alpina L. accepted as Arnica angustifolia Vahl (original description)
Arnica scorpioides L. accepted as Doronicum pardalianches L. (original description)
Artemisia L. (original description)
Artemisia abrotanum L. (original description)
Artemisia absinthium L. (original description)
Artemisia aethiopica L. accepted as Artemisia herba-alba Asso (original description)
Artemisia annua L. (original description)
Artemisia caerulescens L. (original description)
Artemisia campestris L. (original description)
Artemisia crithmifolia L. accepted as Artemisia campestris subsp. maritima (DC.) Arcang. (original description)
Artemisia dracunculus L. (original description)
Artemisia integrifolia L. (original description)
Artemisia maderaspatana L. accepted as Grangea maderaspatana (L.) Poir. (original description)
Artemisia maritima L. (original description)
Artemisia palustris L. (original description)
Artemisia pontica L. (original description)
Artemisia santonicum L. (original description)
Artemisia tanacetifolia L. (original description)
Aster L. (original description)
Aster alpinus L. (original description)
Aster amellus L. (original description)
Aster annuus L. accepted as Erigeron annuus (L.) Desf. (original description)
Aster aurantius L. accepted as Adenophyllum aurantium (L.) Strother (original description)
Aster chinensis L. accepted as Callistephus chinensis (L.) Nees (original description)
Aster concolor L. accepted as Symphyotrichum concolor (L.) G.L.Nesom (original description)
Aster cordifolius L. accepted as Symphyotrichum cordifolium (L.) G.L.Nesom (original description)
Aster divaricatus L. accepted as Eurybia divaricata (L.) G.L.Nesom (original description)
Aster dumosus L. accepted as Symphyotrichum dumosum (L.) G.L.Nesom (original description)
Aster ericoides L. accepted as Symphyotrichum ericoides (L.) G.L.Nesom (original description)
Aster fruticosus L. accepted as Felicia fruticosa (L.) G.Nicholson (original description)
Aster grandiflorus L. accepted as Symphyotrichum grandiflorum (L.) G.L.Nesom (original description)
Aster laevis L. accepted as Symphyotrichum laeve (L.) Á.Löve & D.Löve (original description)
Aster linariifolius L. accepted as Ionactis linariifolia (L.) Greene (original description)
Aster linifolius L. accepted as Galatella sedifolia (L.) Greuter (original description)
Aster miser L. (original description)
Aster mutabilis L. (original description)
Aster novae-angliae L. accepted as Symphyotrichum novae-angliae (L.) G.L.Nesom (original description)